REPRODUCTION OF COMPONENTS

摘要

A pickup head (2) for an automatic component assembly machine comprises several pipettes (1) placed next to each other, for retaining components (3) at the sucking nozzles of the pipettes. The pipettes are located in the same plane, and hence the individual components (3) have their centers along an approximately straight line. In reproducing the components (3) for an accurate evaluation of their positions in relation to the pipettes (1) a non-conventional lens system (5) is used, which has a larger magnification in a direction perpendicular to the approximately straight line through the components than parallel thereto. The pictures of the individual components hereby become extended perpendicularly to the line through the components. This provides a better utilization of the image points of the light sensitive surface (9) of a video camera (7) in the evaluation of the picture and thereby a more accurate determination of the positions of the components.